A pump lifts water from a well 5m underground to a water tow

A pump lifts water from a well 5m underground to a water tower 26m above ground in a 150mm diameter pipe, both open to the atmosphere on a high pressure day (Patm =120kPa). Water flows at 4m/s in the pipe. Its density is 1200 kg/m3. What is the pump\'s discharge (L/s)?

Solution

discharge = velocity * area

= 4*(3.14*0.15²/4)

=0.071m³/s